The following list is of around one hundred Preparatory Schools which have sent boys and girls to Oundle in the past. The list is not exhaustive - other schools do send boys and girls from time to time. Those schools listed in bold have six or more pupils currently at Oundle.

Abberley Hall Worcester
Aldro Surrey
Aldwickbury Hertfordshire
Ardvreck Scotland
Arnold House London
Ashdown House East Sussex
Ashfold Buckinghamshire
Aysgarth North Yorkshire
The Banda Kenya
Barnardiston Hall Suffolk
Beachborough Northamptonshire
The Beacon Buckinghamshire
Beaudesert Park Glocestershire
Beechwood Park Hertfordshire
Beeston Hall Norfolk
Belhaven Hill Scotland
Bilton Grange Rugby
Brackenfield School North Yorkshire
Brooke Priory Rutland
Broomwood Hall London
Caldicott Buckinghamshire
Cargilfield Edinburgh
Carrdus School Oxon
Christ Church Cathedral School Oxford
Copthill School Stamford
Cothill House Oxford
Cottesmore West Sussex
Cundall Manor North Yorkshire
D - G
Dame Bradbury's Essex
Davenies School Buckinghamshire
Devonshire House London
The Dragon Oxford
Dulwich Prep London
Eaton House London
Edge Grove Herfordshire
The Elms Worcestershire
Glebe House Norfolk
Godstowe Buckinghamshire
H - L
The Hall London
Heath Mount Hertfordshire
Hereward House School London
Hill House London
Holmwood House Essex
King's College School Cambridge
Kingshott Hertfordshire
Laxton Junior Northamptonshire
Lochinver House Hertfordshire
Lockers Park Hertfordshire
Ludgrove School Berkshire
M - O
Maidwell Hall Northamptonshire
The Minster School York
Moor Park Shropshire
Mowden Hall Northumberland
Newton Prep London
Norland Place London
Northcote Lodge School London
Old Buckenham Hall Suffolk
Orchard House London
Orwell Park Suffolk
P - R
Packwood Haugh Shropshire
Papplewick Ascot
Pembroke House Kenya
Peponi House Kenya
Pinewood Wilthsire
Port Regis Dorset
Prestfelde Shropshire
Ranby House Nottinghamshire
St Andrew's Prep Sussex
S Anselm's Derbyshire
St Anthony's Prep London
St Christopher's London
St Faith's Cambridge
St George's Windsor Castle Berkshire
St Hilda's Hertfordshire
St Hugh's Lincolnshire
St Hugh's Oxfordshire
St John's Beaumont Berkshire
St John's College School Cambridge
St Mary's School Scotland
St Michael's Jersey
St Paul's Cathedral School London
Sandroyd School Wiltshire
South Lee Suffolk
Spratton Hall Northamptonshire
Stamford Junior School Lincolnshire
Stoneygate School Leicestershire
Sussex House London
Summer Fields Oxfordshire
Swanbourne House Buckinghamshire
T - W
Taverham Hall Norfolk
Terra Nova Cheshire
Terrington Hall School North Yorkshire
Thomas's Battersea London
Thomas's Clapham London
Thomas's Fulham London
Thomas's Kensington London
Town Close Norfolk
Vinehall School Sussex
Wellow House Nottinghamshire
Wellesley House Kent
Westbourne House Sussex
Winchester House School Northamptonshire
Windlesham House West Sussex
Witham Hall Lincolnshire